205250027651 has 4 divisors (see below), whose sum is σ = 210023284152. Its totient is φ = 200476771152.

The previous prime is 205250027597. The next prime is 205250027677. The reversal of 205250027651 is 156720052502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205250027651 - 2¹⁰ = 205250026627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205250077651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2386628186 + ... + 2386628271.

It is an arithmetic number, because the mean of its divisors is an integer number (52505821038).

Almost surely, 2^205250027651 is an apocalyptic number.

205250027651 is a deficient number, since it is larger than the sum of its proper divisors (4773256501).

205250027651 is an equidigital number, since it uses as much as digits as its factorization.

205250027651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773256500.

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 205250027651 in words is "two hundred five billion, two hundred fifty million, twenty-seven thousand, six hundred fifty-one".